Furnace



Mar. 27 1923.

2 SHEETS-SHEET 1.

T. BRICK.

FURNACE.

FILED MAR-27, 1922.

own,

hi ATTORNEY.

Patented Mar. 27, 1923.

THOMAS CRICK, OF INDEPENDENCE, MISSOURI, ASSIGNOR TO INDEPENDENCE STOVEAND FURNACE COMPANY, OF INDEPENDENCE, MISSOURI, A CORPORATION OF MIS-SOURI.

FURNACE.

Application filed March 27, 1922. Serial No. 547,164.

To all whom it may concern.-

Be it known that I, THOMAS CRIoK, a citizen of the United States,residing at Independence, in the county of Jackson and State ofMissouri, have invented a certain new and useful Improvement inFurnaces, of which the following is a specification.

My invention relates to improvements in furnaces. It relatesparticularly to hot air furnaces of the type in which the combustionchamber discharges into a radiator, the flue of which is arranged so asto be accessible, for the purpose of easy cleaning, through the fuelpassage which connects the combustion chamber with the oute casing ofthe furnace.

It has been customary in furnaces: of

this type to rigidly connect the radiator with the fuel passage, bybolting or by making the radiator integral with the fuel passage. Thisis objectionable in that, owing to the greater heat to which theradiator is subjected, the unequal expansion and contraction of theradiator and feed passage is liable to crack the parts or sever theconnecting bolts.

One of the objects of my inventionis to provide a construction in whichthe radiator is free to expand or contract independently of the fuelpassage or the combustion chamber, thereby avoiding liability tofracture or shearing of bolts, while retaining the advantage of easycleaning of the ra diator through the feed passage, and at the same timeaffording a construction which is simple, cheap to make, and which maybe readily assembled and disassembled.

A further object of my invention is t9 provide novel means for tightlysealing where the radiator abuts against the fuel passage and thecombustion chamber.

. Still another object of my invention is to provide a construction ofthe type described in which the line of contact between the combustionchamber and the fuel passage with the radiator is of minimum extent,thus affording a putty seat of minimum length and reducing liability ofleakage of gas and smoke.

The novel features of my invention are hereinafter fully described andclaimed.

In the accompanying drawings, which illustrate the preferred embodimentof my invention,

Fig. 1 is a side elevation of a portion of a furnace provided with myimprovements, the outer casing being omitted.

Fig. 2 is a front elevation of what is shown in Fig. 1. v

Fig. 8 is a vertical sectional view on the line 33 of Fig. 2, a portionof the outer casing being shown.

Fig. 4 is atop view of what is shown in Figs. 1 and 2. v

Fig. 5s a top view of the combustion chamber and fuel passage.

Fig. 6 is an under view of the radiator.

Fig. 7 is a side elevation showing the radiator raised clear of thecombustion chamber and fuel passage.

Similar reference characters designate similar parts in the differentviews.

1 designates the body of the combustion chamber, mounted in the usualmanner on a fire bowl 2. The combustion chamber has a front feed opening3, and about the opening 3 it has a tubular extension 4, preferablyintegral with the body 1, and which forms a fuel passage. The front endof the extension 1 may beattached in any well known manner to the frontplate 5 of the outer casing, Fig. 3.

The extension 4 is provided at its top and front end with a raisedportion 5. The body 1 and extension 4, at the rear of the raised portion5, is provided with a top opening 6. The body 1 and extension 4 andraised portion 5 is provided around the opening 6 with a continuousgroove 7 which forms a continuous putty seat.

8 designates a radiator,- preferablycircular, and which is provided witha flue comprising a radial portion 9, the outer end of which dischargesinto an annular horizontal flue portion 10, which at its rearenddischarges through a pipe collar 11 on the rear of the radiator.

The bottom of the radiator 8' is provided with an opening 12, Fig. 6,which preferably extends through the front side and lower portion of theradiator, and which communicates with and is substantially the same sizeand shape as the opening 6.

The lower side of the radiator 8 about the loo opening 12 has acontinuous flange portion 13 which rests in the putty seat 7, and whichis embedded, when in operative condition, in putty contained in saidseat. The rear end of the raised portion 5 of the fuel passage extendsinto the opening 12 in the side and bottom of the radiator.

The radial portion 9 of the radiator flue forms in substance anextension of the combustion chamber. The gaseous products pass from thecombustion chamber 1 through the opening 6 into the radial portion 9 andthence to the smoke pipe, not shown through the annular portion 10 andthe collar ll.

With the construction shown and described, easy access to the radialportion 9 and annular portion 10 of the radiator flue may be had throughthe fuel passage, for the purpose of cleaning the radiator flue, thesoot being dropped from the flue directly into the combustion chamberand extension 4.

It will be noted that the radiator merely abuts against the putty in theputty seat 7 of the extension 4, and that it has no binding conneciont-herevith. or with the front plate 5 of the outer casing. The radiatoris thus free to expand and contract independently of the extension 4;,thus avoiding liability of fracture of the parts or of shearing orbreaking of connecting bolts.

With the construction shown and described, a simple structure of fewparts is afforded, which is readily assembled, which is durable and notliable to damage by expansion and contraction of the parts, and in whichthe single feed passage affords the further function of ready access tothe radiator flue.

I do not limit my invention to the structure shown and described, asmany modifications, within the scope of the appended claims, may be madewithout departing from the spirit of my invention.

What I claim is 1- 1. In a furnace, a combustion chamber having anopening and a tubular extension about said opening forming a fuelpassage, the extension having a raised portion at its top and front, anda radiator having a flue into which said chamber discharges and havingan opening in its bottom and in one side directly connecting said fiuewith said passage, said raised portion of said extension at its rear endextending into said opening in the side of the radiator, substantiallyset forth.

2. In a furnace, a combustion chamber having an opening and a tubularextension about said opening forming a fuel passage,

the extension having a raised portion at its top and front, said raisedportion having an open rear end, and a radiator having a fine into whichsaid chamber discharges, the bottom of the radiator having an openingextending through one side of the radiator and connecting directly saidflue with said combustion chamber and with said passage at the rear ofsaid raised portion, the upper end of the combustion chamber and the topof said extension at the rear of said raised portion having an openingof substantially the same size as and registering with the opening inthe bottom of said radiator, substantially as set forth.

3. In a furnace, a combustion chamber having an opening and a tubularextension about said opening forming a fuel passage, the upper side ofsaid chamber and said extension around said opening having a continuousputty seat, and a radiator having a flue comprising a radial portion andan annular portion into which said radial portion discharges, the bottomof said radiator being fitted in said seat and being provided with anopening of substantially the same size as and registering with theopening in the upper end of the combustion chamber and in the top of theextension and directly connecting the latter opening with said radialand annular portions of the radiator flue, substantially asset forth.

4. In a furnace, a combustion chamber having an opening and a tubularextension about said opening forming a fuel passage, said extensionhaving at its top and front a raised portion, the upper end of thecoinbustion chamber and the top of said extension at the rear of saidraised portion having an opening, the upper end of the combustionchamber and the upper side of said extension around said opening havinga continuous putty seat, and a radiator having its lower end fitted insaid seat and provided with a fine comprising a radial portion and anannular portion into which the radial portion discharges, the bottom ofthe radiator having an opening which extends through one side of theradiator and which directly connects said radial and annular portionswith the opening in the top of the combustion chamber and saidextension, the rear end of said raised portion of said extension beingopen and communicating through the opening in the side of the radiatorwith said annular and radial portions, substantially as set forth.

In testimony whereof I have signed my name to this specification.

THOMAS CRIGK.

